To fix wallpaper seams, use paste and seam roller

Dear Martha: How can I fix curling wallpaper seams?

A: Most wallpapers last at least 10 years, but a host of factors, including water damage, humidity and heat, may cause the edges to curl sooner. If the problem is persistent, consider removing the paper and painting the walls instead. If you can correct any underlying issues, it's worth reattaching wall-covering edges — and it's easy to do, says Scott Mulhern, of Custom Paper Hanging in Hopewell, N.J.

First, read the instructions that came with the wallpaper to determine which adhesive to buy; certain papers call for a specific type. If you don't have this information, most modern papers re-adhere with a lightweight vinyl paste such as Roman's Professional Heavy Duty Clear PRO-838.

To prepare the wallpaper, moisten the underside of the loose edges with a warm, damp cloth. Then brush a thin layer of adhesive onto the paper and the wall. Leave the paper to stretch for 15 to 20 minutes before brushing another thin layer of adhesive onto the paper. When it becomes sticky, press the paper with a seam roller, working toward the seam. Before the adhesive dries, remove excess with a damp cloth.

Dear Martha: After decorating a cake, how do I transfer it to the plate I plan to present it on?

A: One approach is to assemble your cake directly on the plate or cake stand you intend to serve it on. That way you won't have to move it at all. To protect the stand from drips and smudges, slip strips of parchment under the cake around the perimeter before frosting. Once the cake has been decorated, slide out the parchment.

If, however, you use a cake turntable or buy an iced cake, you'll need to transfer the tiers. First, chill the cake until the frosting has set. Then slide two large, offset spatulas under the cake at the 8 o'clock and 4 o'clock positions, and transfer it to the serving plate. Smooth any nicks you may have created. If you plan to pipe a border of icing around the base of the cake, do so last.

Dear Martha: What method do you suggest for cleaning flat-screen computer monitors and televisions?

A: For everyday cleaning and dust removal, a gentle approach is best. Use a lint-free material, such as microfiber or flour-sack cloth. Avoid paper products, which are too abrasive. Dampen the cloth slightly with distilled or soft tap water; hard water will leave streaks on the display (if you're not sure whether your house has hard water, rough deposits on bathroom fixtures are a telltale sign). Wipe the monitor once lightly from top to bottom, back and forth.